Thermal imagers are definitely handy when troubleshooting PCBs. For my personal use, I could actually use an SMU (though not a 4-quadrant) in my work, but I’d still probably go for the thermal camera just because it’s very handy for just about any misbehaving PCB.
(A finger will tell you which chip has a problem. A camera can tell you which pin has a problem.)
As far as the DMS e-lab is concerned, the fact that everyone intuitively understands what the thermal camera is and how it works seems like a +1 for that equipment as well.